ignition in dead centre
41Overhead valve — OHV redirects here. OHV may also refer to Off highway vehicle. Components of a pushrod valve actuation system …
42Controllable pitch propeller — A controllable pitch propeller (CPP) or variable pitch propeller is a type of propeller with blades that can be rotated around their long axis to change their pitch. If the pitch can be set to negative values, the reversible propeller can also… …
43Stroke ratio — In a reciprocating piston engine, the stroke ratio, defined by either bore/stroke ratio or stroke/bore ratio, is a term which is used to describe the ratio between the diameter of the cylinder bore and the length of the piston stroke within its… …
44Obturator ring — For other uses see Obturator Obturator rings are a specific type of piston ring used in World War I aero engines to compensate for warping of the cylinders. Purpose The rotary aircraft engines of World War I (engines with the crankshaft fixed to… …
45Counter-rotating propellers — Not to be confused with Contra rotating propellers. Counter rotating propellers Opposite propeller blade section can be clearly seen on this Piper PA 44 Seminole Counter rotating propellers, found on twin and multi engine propeller driven… …
46Outline of automobiles — The following outline is provided as an overview of and topical guide to automobiles: Automobile (or motor car) – wheeled passenger vehicle that carries its own motor. Most definitions of the term specify that automobiles are designed to run… …
47Muffler — This article is about the exhaust system component. For other uses, see Muffler (disambiguation). Muffler(silver) and exhaust pipe on a Ducati 695 motorcycle A muffler (or silencer in British English) is a device for reducing the amount of noise… …
48Dry sump — A dry sump is a lubricating motor oil management method for four stroke and large two stroke piston internal combustion engines that uses external pumps and a secondary external reservoir for oil, as compared to a conventional wet sump system.… …
49MAP sensor — The examples and descriptions in this article apply strictly to four stroke cycle gasoline engines. Other engine types such as diesel, or two stroke cycle can differ in the exact implementation, but the general theme still applies. The manifold… …
50Diesel particulate filter — A diesel particulate filter (top left) in a Peugeot Off road DPF Installa …
